Railway-truck.



R. G. TAYLOR.

RAILWAY TRUCK.

APPLICATION FILED MAR. 6. 191;.

L43m6 Patented Oct. 16, 1917.

N M STATEd ta ora ion.

RALPH G. TAYLOR, 01E CHICAGO, ILLINOIS, ASSIGNOR T0 UNIVERSAL DRAFT GEAR ATTACHMENT 00., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

RAILWAY-TRUCK.

Specification of Letters Patent.

Patented Oct. 16, 191?.

To all whom it may concern:

Be it known that I, RALPH G. TAYLOR, a citizen of the United States, and resident of Chicago, county of Cook,-and State of Illinois, have invented certain new and useful Improvements in Railwa -Trucks, of which the following is a speci cation, and which are illustrated in the accompanying drawings, forming a part thereof.

The invention relates to trucks for railway cars, and is particularly applicable to freight car service.

The object of the invention is to provide supplemental springs between the truck bolster and frame, and consists broadly in a chambered bolster with springs housed therein and arranged to supplement the usual springs upon which the bolster rests. More specifically, it consists in a structure such as is hereinafter described, which, however, may be varied in detail, as illustrated in the accompanying drawings, in which Figure 1 is a detail side elevation of a truck embodying the invention;

Fig. 2 i a sectional View on the line 22 of Fig. 1; 1

Fig. 3 is a similar view showing a slight modification; and

Fig. 4 is a detail of the spring seat housed within the bolster,

The invention may be incorporated into trucks or various forms of construction, there beingshown a simple and common form of' truclc provided with a side frame compr sing topa'nd bottom'bars 10, 11, and an intermediate-bar 12, and a pair of pedestals 1 3, 14. The bOlSter 15 is inclosed between the upper and intermediate frame members and the pedestals, and is in vertical sliding engagement with the latter, being su ported on the usual springs, as 16, 17, genera ly four innumber, which rest upon a spring seat 18,

The bolster 15 is of the box type and within it is housed a helical spring 19, having a vertical axis and resting upon a seat 20, e-

' tween which and the top of the bolstenit reactsgf tlieseat plate 20 bemgrecessed in its lowenface. A stout pin 21 fits within the g the plate. 20;and'projects down: wardl through an aperture 'm'the bottom a, of the-.hnlster, the parts being so positioned that this pin is located between the truck springs 16, 17. Preferably thelength of the pin is less than the normal distancebetween the bottom of the seat recess and the element of the frame with which it cooperates.

In the construction illustrated in Fig. 2, lost motion is provided between the pin 21 and the spring seat 20, the pin resting at all times on the bottom spring seat 18 and slidingly entering the recess in the plate 20. Upon compression of the springs 16, 17, the upper end of the pin 21 engages the bottom of the recess in the plate 20, and thus brings the spring 19 into action.

In the construction of Fig. 3, the pin 21 is shown as secured within the recess of the plate 20 by means of a key 22, and for convenience of assembly the upper face of the plate is provided with a plurality of radial ribs 23, upon which the spring 19 seats and between which the key 22 may be easily inserted. The length of the pin 21 is'preferably such that under normal loads its lower end will be out of contact with the seat upon which the springs 16, 17 rest. Under excessive loads this pin will come into engagement with the spring seat 18, whereupon the spring 19 will be called into action.

It is the usual practice to provide truck springs of a suitable capacity for sustaining the load the car is designed to carry. It not infrequently occurs that cars are loaded beyond their intended capacity. For example, cars ordinarily intended for coal service are sometimes used for carrying heavier freight, such as ore.- In that case, if the car is fully loaded its springs may be fully compressed and consequently become more solid blocks. Where the expedient is resorted to of putting in extra hea truck springs to take care of excessive loa they are too rigid to have any material cushionin action under the lighter lading, thus resulting in destructive jarring of the car and increasing the tendency of the car to jump from the track.

The present invention adapts the car'to both light and heavy service, with eficient spring supports in either case. The successive action of the main springs and the supplemental springs is secured by the provision of lost motion between the pin 21 and one of the plates with which it comes into endwise engagement. Should it be desired to have the bolster springs in constant servmotion by a lengthening of the pin.

I claim as my i'nvention- 1. In a car truck, in combination, a suitable frame, a bolster a sprin support for the bolster carried by the ame, and a cushioning element carried by the bolster and responsive te the weight of the load for supplementing the spring support.

2. In a car truck, in combination, a suitable frame, a bolster, a spring support for the bolster carried by the frame, a cushioning element carried by the bolster for supplementing "the spring support and being effective upon a partial compression of sue support.

3. In. a car able frame within the bolster, and a thrust member interposed between the spring and the frame.

4. In a car truck, in combination a suitable frame, a chambered bolster, sprm supports for the bolster carried by the rame, a s ring housed within the bolster and reacting against the top thereof, a thrust pin interposed between the housed spring and the frame and normally out of engagement with one of'such elements.

5. In a car truck, in combination, a suitable frame, a chambered bolster, springs supporting the bolster on the frame, a spring within the bolster and reacting between a V truck, in combination, a sultfixed upper abutment and a movable lower abutment, and a thrust member interposed between the movable abutment and the frame.

6. In a car truck. in combination, a suit able frame, a chambered bolster, springs carried by the frame and supporting the bolster, a spring within the bolster and reacting against the top thereof, a seat for the last-named spring having a recess in its lower face, a thrust pin entering the seat recess and engaging the frame.

7. In a car truck, in combination, a suita chambered bolster, a spring aaaaooe able frame, a chambered bolster, springs carried by the frame and su porting the bolster, a spring within the. olster and react- .ing against the top thereof, a seat for the last-named spring, such seat having a recess in its rearward face, a pin interposed be- .named spring having a recess in its lower face,a thrust pin entering the seat recess and engaging the frame, and means for securing the pin within the recess.

9. In a car truck,-in combination, a suit able frame, a chambered bolster, springs carried by the frame and su porting the bolster, a spring within the olster and reacting against the top thereof, a seat for the last-named spring having a recess in its lower face, .1, thrust pin entering the seat recess and engaging the frame,'and means for securing the pin within the recess, the lower end of the pin being normally out of. engagement with the frame.

10. In a car truck, in combination, a suitable frame, a chambered bolster, springs carried by the frame and supporting the bolster,

a spring within the bolster and reacting against the top thereof, a seat for the lastnamed spring having a recessin its lower face, a thrust pin entering the seat recess and engaging the frame, and a pinvextending through the first-named pin and the recessed sprlng seat.

RALPH TAYLOR. 

